Process for treating metals using recycled gases

Details Process for treating metals using recycled gases Process for treating metals using recycled gases

C - Chemistry, Metallurgy

21

D

38/21, 148/37.2

C21D 1/76 (2006.01) C23C 11/00 (1980.01)

Patent

CA 1141632

PROCESS FOR TREATING METALS USING RECYCLED GASES ABSTRACT OF THE DISCLOSURE A process is described for treating metals in a furnace by indirect heating techniques, e.g., by using a radiant tube heater, wherein the gas used for heating is passed out of the furnace, treated in a known manner, and passed back into the furnace to serve as the source for the treating atmosphere or as a carrier gas. Carburization of metals can be carried out by this method which results in a savings in fuel and overall operational expense.

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